So, yesterday was the second time I met online with a relative to help him with some physics problems he was studying for an entrance exam to the university. our solution was to share photos of books and notes on paper, to share sound recording and at the end we did a video call where he shared the book and pointed with his finger and I explained to him with my voice since it's hard to write and focus with a phone. Just a long way of saying, "the computer as a free form expression medium hasn't happened yet"

You may enjoy chalktalk if you haven't seen Ken Perlin's work before...

saw it once, will try running it now